What is the limit as x approaches infinity of (3x^2 + 5x + 2) / (6x^2 + x + 4)?
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What is the value of cosh(2x) - sinh(3x) at x = 0.5?
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What are the characteristics of the cubic function f(x) = x^3? Describe its graph, domain, range, x-intercepts, y-intercept, symmetry, and end behavior.